Abstract

We present a simple scheme to generate a continuously tunable pulsed narrow-bandwidth infrared wave. An Nd:YAG-pumped periodically poled lithium niobate optical parametric generator (OPG) is seeded with the output of another OPG pumped by the second harmonic (0.532 µm) of the Nd:YAG laser. A tunable idler wave from the 0.532-µm pumped OPG, operated away from the degenerate point, provides a narrow linewidth seed source for the 1.064-µm pumped broadband OPG. Seeding forces the second OPG to operate in a narrowband operation comparable with that of the seed source. Linewidth of the YAG-pumped OPG is 5–25 nm, in the tuning range of 1.61–1.83 µm (signal), narrowed to 1.48–1.05 nm. Methods of further reduction of linewidth also have been discussed.

© 2002 Optical Society of America

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References

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  1. U. Bader, J. P. Meyn, J. Bartschke, T. Weber, A. Borsutzky, R. Wallenstein, R. G. Batchko, M. M. Fejer, R. L. Byer, “Nanosecond periodically poled lithium niobate optical parametric generator pumped at 532 nm by a single-frequency passively Q-switched Nd:YAG laser,” Opt. Lett. 24, 1608–1610 (1999).
    [CrossRef]
  2. L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
    [CrossRef]
  3. S. Haidar, H. Ito, “Injection-seeded optical parametric oscillator (OPO) for efficient difference frequency generation in mid-IR,” Opt. Commun. 171, 171–176 (1999).
    [CrossRef]
  4. Y. He, B. J. Orr, “Tunable single-mode operation of a pulsed optical parametric oscillator pumped by a multimode laser,” App. Opt. 40, 4836–4848 (2001).
    [CrossRef]
  5. P. E. Powers, K. W. Aniolek, T. J. Kulp, B. A. Richman, S. E. Bisson, “Periodically poled lithium niobate optical parametric amplifier seeded with the narrow-band filtered output of an optical parametric generator,” Opt. Lett. 23, 1886–1888 (1998).
    [CrossRef]
  6. D. Rytz, B. Zysset, D. Ellgehausen, G. Mizell, “Second-harmonic generation and degradation in critically phase-matched KnbO3 with a diode pumped Q-switched Nd:YLF laser,” Opt. Lett. 17, 1432–1435 (1992).
    [CrossRef]

2001 (1)

Y. He, B. J. Orr, “Tunable single-mode operation of a pulsed optical parametric oscillator pumped by a multimode laser,” App. Opt. 40, 4836–4848 (2001).
[CrossRef]

1999 (2)

1998 (2)

P. E. Powers, K. W. Aniolek, T. J. Kulp, B. A. Richman, S. E. Bisson, “Periodically poled lithium niobate optical parametric amplifier seeded with the narrow-band filtered output of an optical parametric generator,” Opt. Lett. 23, 1886–1888 (1998).
[CrossRef]

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

1992 (1)

Aniolek, K. W.

Bader, U.

Bartschke, J.

Batchko, R. G.

Bisson, S. E.

Borsutzky, A.

Butterworth, S. D.

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

Byer, R. L.

Ellgehausen, D.

Fejer, M. M.

Haidar, S.

S. Haidar, H. Ito, “Injection-seeded optical parametric oscillator (OPO) for efficient difference frequency generation in mid-IR,” Opt. Commun. 171, 171–176 (1999).
[CrossRef]

Hanna, D. C.

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

He, Y.

Y. He, B. J. Orr, “Tunable single-mode operation of a pulsed optical parametric oscillator pumped by a multimode laser,” App. Opt. 40, 4836–4848 (2001).
[CrossRef]

Ito, H.

S. Haidar, H. Ito, “Injection-seeded optical parametric oscillator (OPO) for efficient difference frequency generation in mid-IR,” Opt. Commun. 171, 171–176 (1999).
[CrossRef]

Jundt, D. H.

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

Kulp, T. J.

Lefort, L.

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

Meyn, J. P.

Mizell, G.

Orr, B. J.

Y. He, B. J. Orr, “Tunable single-mode operation of a pulsed optical parametric oscillator pumped by a multimode laser,” App. Opt. 40, 4836–4848 (2001).
[CrossRef]

Powers, P. E.

Puech, K.

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

Richman, B. A.

Ross, G. W.

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

Rytz, D.

Smith, P. G. R.

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

Wallenstein, R.

Weber, T.

Zysset, B.

App. Opt. (1)

Y. He, B. J. Orr, “Tunable single-mode operation of a pulsed optical parametric oscillator pumped by a multimode laser,” App. Opt. 40, 4836–4848 (2001).
[CrossRef]

Opt. Commun. (2)

L. Lefort, K. Puech, S. D. Butterworth, G. W. Ross, P. G. R. Smith, D. C. Hanna, D. H. Jundt, “Efficient, low-threshold synchronously pumped parametric oscillation in periodically poled lithium niobate over the 1.3 µm to 5.3 µm range,” Opt. Commun. 152, 55–58 (1998).
[CrossRef]

S. Haidar, H. Ito, “Injection-seeded optical parametric oscillator (OPO) for efficient difference frequency generation in mid-IR,” Opt. Commun. 171, 171–176 (1999).
[CrossRef]

Opt. Lett. (3)

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Figures (5)

Fig. 1
Fig. 1

Schematic diagram of the experimental setup. PR1, the 1.064-µm pump-beam splitter (T ∼ 40%, R ∼ 60%); KN, the KNbO3 crystal; PR2, the residual 1.064-µm pump-beam reflector; Re, the retarder to rotate 532-nm pump polarization by 90°; PR3, the 532-nm pump reflector; PPLN, the periodically poled LiNbO3 crystals and M1 and M2 are dichroic mirrors for beam steering. Lenses L1 and L2 are used for beam compression to reduce the beam diameter to 0.5 mm. L3 and L4 are lenses for beam reduction.

Fig. 2
Fig. 2

Temperature-tuning characteristics of 532-nm-pumped OPG.

Fig. 3
Fig. 3

Temperature tuning of signal and idler for a 1064-nm-pumped OPG, with PPLN crystals of grating period 30.2 and 31 µm.

Fig. 4
Fig. 4

Idler linewidth of OPG-1 and signal linewidth of OPG-2 in the tuning range of 1.61–1.83 µm.

Fig. 5
Fig. 5

Typical seeded and unseeded spectrum of signal wave of OPG-2.

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